Lines and Angles/ MCQ/CBSE Class 9 Mathematics.

Lines and Angles – Chapter 6/MCQ/CBSE Class 9 Mathematics is about the Multiple Choice Questions that you can expect for Yearly Examination. Here you can find out practice problems for Class 9 Mathematics.

Lines and Angles – Chapter 6/MCQ/CBSE Class 9 Mathematics
Extra Questions for Practice/ MCQ Worksheet
Choose the correct answer from the options given below:

1. Triangle PQR is right angled at Q and PQ = QR. Find the angle measure of angle P?
A. 45
B. 35
C. 75
2. In a triangle ABC, if the sum of two angles is 125 degree, find the measure of third angle?
A. 55
B. 45
C. 65
3. In a triangle if one angle is equal to the sum of the other two angles, then the triangle is ———
A. Acute angled
B. Obtuse angled
C. Right angled
4. If two parallel lines are cut by a transversal, then the sum of the interior angles on the same side of transversal are ———-
A. Complementary
B. Supplementary
C. Equal
5. An angle which is greater than 180 degree but less than 360 degree is called a ——– angle.
A. Straight angle
B. Reflex angle
C. Right angle
6. Two angles whose measures are a and b are such that 3a – b = 60 degree. Find the value of a, if they form a linear pair?
A. 40 degree
B. 60 degree
C. 80 degree
7. Two angles form a linear pair. If one angle is 45 degree, find the angle measure of other angle?
A. 135 degree
B. 115 degree
C. 45 degree
8. If one angle measure is x, then the complement of x is ———-
A. 90 – x
B. 90 + x
C. 180 – x
9. The supplement of a right angle is ————-
A. Acute angle
B. Obtuse angle
C. Right angle
10. The supplement of an acute angle is always an ———- angle.
A. Acute
B. Obtuse
C. Right
11. If two parallel lines are cut by a transversal, then the two interior angles on the same side of transversal are in the ratio 1:2, then the measure of greater angle is ———–
A. 60
B. 90
C. 120
12. The angles of a triangle are in the ratio 2: 3: 4. Then the triangle is a ————- angled triangle.
A. Acute
B. Obtuse
C. Right
13. The angles of a triangle are in the ratio 2: 3: 4. Then the greatest angle of the triangle is —–
A. 40
B. 60
C. 80